CN104259157B - The preparation method of gel composite tube cleaner and cross-linked polyacrylamide aqueous gel - Google Patents
The preparation method of gel composite tube cleaner and cross-linked polyacrylamide aqueous gel Download PDFInfo
- Publication number
- CN104259157B CN104259157B CN201410399770.8A CN201410399770A CN104259157B CN 104259157 B CN104259157 B CN 104259157B CN 201410399770 A CN201410399770 A CN 201410399770A CN 104259157 B CN104259157 B CN 104259157B
- Authority
- CN
- China
- Prior art keywords
- gel
- tube cleaner
- cross
- composite tube
- hpam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/30—Constructional aspects of the propulsion means, e.g. towed by cables
- F16L55/38—Constructional aspects of the propulsion means, e.g. towed by cables driven by fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2209/00—Details of machines or methods for cleaning hollow articles
- B08B2209/02—Details of apparatuses or methods for cleaning pipes or tubes
- B08B2209/027—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
- B08B2209/04—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces using cleaning devices introduced into and moved along the pipes
- B08B2209/053—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces using cleaning devices introduced into and moved along the pipes being moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B2209/055—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces using cleaning devices introduced into and moved along the pipes being moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/24—Homopolymers or copolymers of amides or imides
- C08J2333/26—Homopolymers or copolymers of acrylamide or methacrylamide
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a kind of gel composite tube cleaner and the preparation method of cross-linked polyacrylamide aqueous gel, including roller brush type tube cleaner, cross-linked polyacrylamide aqueous gel and polyurethane wiper, wherein, the roller brush type tube cleaner is arranged on the front portion of the gel composite tube cleaner, the polyurethane wiper is arranged on the afterbody of the gel composite tube cleaner, and the cross-linked polyacrylamide aqueous gel is arranged on the middle part of the gel composite tube cleaner.
Description
Technical field
The present invention relates to oil-gas pipeline field, specially a kind of gel composite tube cleaner and cross-linked polyacrylamide are water base solidifying
The preparation method of glue.
Background technology
In order to ensure in-service pipeline is long-term normal, safe operation, it is necessary to periodically using the wax deposition in wiper discharge pipe,
The debris such as water, sandstone, condensed liquid.The mechanical pipe-cleaner of work is probably due to pipe is contained within excessive debris, can not pass through in pipe
Pipeline reducing diameter and elbow deform upon and blocking pipeline itself, substantially reduce the efficiency of pigging work, or even cause whole
Bar pipeline is paralysed, and causes serious consequence, therefore the blocking problems demand of mechanical pipe-cleaner to solve.
In the prior art, being cleaned with chemical reagent merely can reduce the pipeline in-service life-span, improve cleaning cost, and some
Dirt is also difficult to chemically process clean completely；Equally, it is simple to use to long-term conveying, deposition velocity oil pipeline faster
Mechanical pipe-cleaner be also difficult to reach change it is defeated after ideal effect；Physical cleaning is used in combination oneself with chemical cleaning method turns into current
Pipeline cleaning technology development a kind of trend, gel filtering tube device combined type cleaning technology be by pigging gel, mechanical pipe-cleaner and specially
Formed with chemical reagent sequential combination, the technological synthesis have used physics and chemical pigging technology, with conventional mechanical wiper
Or the incomparable advantage of Chemical cleaning, various practical Composite cleaning technologies obtain excellent effect in pigging operation
Really.
The content of the invention
The present invention provides the preparation method of a kind of gel composite tube cleaner and cross-linked polyacrylamide aqueous gel, its purpose
Be the appearance blocking situation in wiper work that solves probability it is high, and the ineffective problem of pigging.
It is water base solidifying the invention provides a kind of gel composite tube cleaner, including roller brush type tube cleaner, cross-linked polyacrylamide
Glue and polyurethane wiper, wherein, the roller brush type tube cleaner is arranged on the front portion of the gel composite tube cleaner, the poly- ammonia
Ester wiper is arranged on the afterbody of the gel composite tube cleaner, and the cross-linked polyacrylamide aqueous gel is arranged on described solidifying
The middle part of the compound wiper of glue.
Optionally, the preparation method of the cross-linked polyacrylamide aqueous gel is comprised the following steps：
Aluminium citrate AlCit mother liquors and polyacrylamide HPAM mother liquors are added to the water well mixed, then thiocarbamide and chlorine
Change sodium, regulation pH value is 5.0~7.0 so that the concentration of HPAM is 2500mg/L-3500mg/L in the mixture after adding water,
The concentration of AlCit is 105mg/L-125mg/L, and the concentration of NaCl is 140mg/L-160mg/L, and the concentration of thiocarbamide is 140mg/L-
170mg/L；
(date, abbreviation the d) -7d that cross-linking reaction carried out at 20 DEG C -85 DEG C 3 days during polyacrylamide is added into the mixture
, wherein, the concentration of polyacrylamide is 1000mg/L-4500mg/ after the polyacrylamide adds the mixture
L。
Optionally, the HPAM relative molecular weights in the HPAM mother liquors are 1.0 × 107-2.0×107。
Optionally, also include：In polyacrylamide is added into the mixture cross-linking reaction is carried out at 20 DEG C -85 DEG C
When, added aluminium citrate as crosslinking agent in the mixture.
Optionally, it is described polyacrylamide is added the mixture in carry out cross-linking reaction 3d-7d at 20 DEG C -85 DEG C
When, methods described also includes：
Polyacrylamide is hydrolyzed, partially hydrolyzed polyacrylamide (PHPA) is obtained, wherein, the partial hydrolysis polyacrylamide
The relative molecular weight of amine is 1.0 × 107-2.0×107, the degree of hydrolysis 20%-30% of the polyacrylamide.
Beneficial effects of the present invention are as follows：
In gel composite tube cleaner of the invention, the roller brush type tube cleaner of front end can effectively be brushed off or loosened on inner-walls of duct
The more firm debris of adhesion, such as wax deposition, iron rust, and certain dredging effect is played, convenient cross-linked polyacrylamide below is water base
Gel and polyurethane wiper pass through, before the cross-linked polyacrylamide aqueous gel behind adjacent roller brush type tube cleaner is along pipeline
During row, by its strongly adherent and shear shinning, loose wax deposition, iron rust thing etc. can be glued from tube wall, and simultaneously
The debris such as the water in pipeline, sandstone, condensed liquid are included in gel in the form of suspension together, pipeline is finally taken out of, with
And cross-linked polyacrylamide aqueous gel and promotion medium are kept apart positioned at the polyurethane wiper of rearmost end, itself is not only
Cross-linked polyacrylamide aqueous gel and roller brush type tube cleaner can be promoted to advance forward, can also further remove what is remained on tube wall
Debris and cross-linked polyacrylamide aqueous gel, push in cross-linked polyacrylamide aqueous gel above in the lump, effectively improve
Overall pigging ability and effect, so so that the present invention combines the advantage of pipeline physical cleaning and Chemical cleaning, not only
The brushing ability that mechanical pipe-cleaner is stronger is make use of, and cross-linked polyacrylamide aqueous gel used can be by most of debris
It is contained within, greatly reduces when use merely mechanical pipe-cleaner and the probability of blocking occurs, while whole being combined clearly can be reduced
Promotion pressure needed for the operation of pipe device, mitigates the abrasion to inner tubal wall, effectively reduces pigging cost.
Brief description of the drawings
Fig. 1 is the structural representation of gel composite tube cleaner in the embodiment of the present invention.
Reference is specific as follows：
1 --- roller brush type tube cleaner, 2 --- cross-linked polyacrylamide aqueous gel, 3 --- polyurethane wiper, 4 ---
Promotion medium.
Specific embodiment
The present invention provides the preparation method of a kind of gel composite tube cleaner and cross-linked polyacrylamide aqueous gel, its purpose
Be the appearance blocking situation in wiper work that solves probability it is high, and the ineffective problem of pigging.
Below in conjunction with the accompanying drawings and embodiment is explained in detail and illustrates to above technical scheme.
As shown in figure 1, the invention provides a kind of gel composite tube cleaner, including roller brush type tube cleaner 1, crosslinked polypropylene
Acid amides aqueous gel 2 and polyurethane wiper 3, wherein, roller brush type tube cleaner 1 is arranged on the front portion of the compound wiper of the glue,
Polyurethane wiper 3 is arranged on the afterbody of the gel composite tube cleaner, and cross-linked polyacrylamide aqueous gel 2 is arranged on described
The middle part of gel composite tube cleaner.
Wherein, when the gel composite tube cleaner is put into pipeline, it is situated between by promoting in the rear end of polyurethane wiper 3
Matter 4 is promoted so that the gel composite tube cleaner is moved in the pipeline, promotion medium 4 can be gas or
Liquid promotion medium.
Wherein, roller brush type tube cleaner 1 is specifically as follows chrome-silicon alloy roller brush type tube cleaner, to extend roller brush type tube cleaner 1
Service life, and roller brush type tube cleaner 1 is arranged on the front end of the gel composite tube cleaner, and then can be clear by roller brush type
Pipe device 1 can effectively be brushed off or loosened and more firm debris are adhered on inner-walls of duct, such as wax deposition, iron rust, and play certain dredging
Effect, convenient cross-linked polyacrylamide aqueous gel below and polyurethane wiper pass through.
Further, cross-linked polyacrylamide aqueous gel 2 is a kind of pigging gel, is arranged on the compound pigging of the gel
The middle part of device, by its strongly adherent and shear shinning, from tube wall can glue loose wax deposition, iron rust thing etc. get off, and
The debris such as the water in pipeline, sandstone, condensed liquid are included in gel in the form of suspension together simultaneously, last band outlet pipe
Road so that can be contained within for most of debris by cross-linked polyacrylamide aqueous gel 2, greatly reduces simple using mechanical
There is the probability of blocking during wiper, while the promotion pressure needed for reducing whole compound wiper operation, mitigates to inner tube
The abrasion of wall, effectively reduces pigging cost
Further, polyurethane wiper 3 is specifically as follows polyurethane foam wiper, is arranged on the gel compound clear
The afterbody of pipe device, can keep apart cross-linked polyacrylamide aqueous gel 2 and promotion medium 4, and itself can not only promote friendship
Connection Polyacrylamide Aqueous Gel 2 and roller brush type tube cleaner 1 advance forward, can also further remove on tube wall remain debris and
Cross-linked polyacrylamide aqueous gel, pushes in cross-linked polyacrylamide aqueous gel 2 above in the lump, effectively increases entirety
Pigging ability and effect,
Lower mask body is specifically described to the preparation method of cross-linked polyacrylamide aqueous gel：
Embodiment one
Suitable quantity of water is taken in reaction vessel, adds aluminium citrate AlCit mother liquors and the mixing of polyacrylamide HPAM mother liquors equal
It is even, wherein, HPAM relative molecular weights are 1.0 × 107, thiocarbamide and sodium chloride are subsequently adding, after stirring and dissolving is complete, use 0.1M
PH is to 5.0~7.0 for NaOH solution regulation system, adds water and is diluted to required concentration, make in mixture HPAM, AlCit, NaCl and
Thiourea concentration is followed successively by 3500mg/L, 105mg/L, 140mg/L and 175mg/L, and system finally is warming up into 20 DEG C~45 DEG C enters
Row static state constant-temperature cross-linking reaction, stops reaction after 7 days, gained cross-linked polyacrylamide aqueous gel is deposited into standby.
Embodiment two
Suitable quantity of water is taken in reaction vessel, adds AlCit mother liquors and HPAM mother liquors well mixed, wherein, relative point of HPAM
Son amount is 2.0 × 107, thiocarbamide and sodium chloride are subsequently adding, after stirring and dissolving is complete, with 0.1M NaOH solution regulation systems pH
To 7.0, add water and be diluted to required concentration, make the concentration in mixture in HPAM be for the concentration of 2500mg/L, AlCit
125mg/L, NaCl are 160mg/L and thiourea concentration is 140mg/L, and the mixture finally is warming up into 80 DEG C~85 DEG C is carried out
Static state constant-temperature cross-linking reaction, stops reaction after 3d, gained cross-linked polyacrylamide aqueous gel is deposited into standby.
After cross-linked polyacrylamide aqueous gel is prepared, roller brush type tube cleaner 1 is sent out using ball device is received and dispatched
Enter in pipeline to be cleaned, then slowly cut cross-linked polyacrylamide aqueous gel 2, treat that the roller brush type in its adjacent front is clear
After pipe device 1 forms the stable slug of certain length, then polyurethane wiper 3 is sent out into gel slug rear end, finally with liquid
Or pneumatic power source is promoted and moved ahead.To improve the job stability and efficiency of the compound wiper, the He of roller brush type tube cleaner 1
The diameter of polyurethane wiper 3 should be slightly larger than internal diameter of the pipeline, be advisable with beyond 4 millimeters of (mm) -8mm.
Our experiments show that, during using embodiment of above pigging, the plural gel wiper is under low-pressure medium promotion
Smooth can pass through pipeline, debris can be cleaned in most pipelines, substantially without any residue on inner tubal wall, and
The generation of blocking phenomenon is found no, pigging working stability is safe and efficient.
Beneficial effects of the present invention are as follows：
In gel composite tube cleaner of the invention, the roller brush type tube cleaner of front end can effectively be brushed off or loosened on inner-walls of duct
The more firm debris of adhesion, such as wax deposition, iron rust, and certain dredging effect is played, convenient cross-linked polyacrylamide below is water base
Gel and polyurethane wiper pass through, before the cross-linked polyacrylamide aqueous gel behind adjacent roller brush type tube cleaner is along pipeline
During row, by its strongly adherent and shear shinning, loose wax deposition, iron rust thing etc. can be glued from tube wall, and simultaneously
The debris such as the water in pipeline, sandstone, condensed liquid are included in gel in the form of suspension together, pipeline is finally taken out of, with
And cross-linked polyacrylamide aqueous gel and promotion medium are kept apart positioned at the polyurethane wiper of rearmost end, itself is not only
Cross-linked polyacrylamide aqueous gel and roller brush type tube cleaner can be promoted to advance forward, can also further remove what is remained on tube wall
Debris and cross-linked polyacrylamide aqueous gel, push in cross-linked polyacrylamide aqueous gel above in the lump, effectively improve
Overall pigging ability and effect, so so that the present invention combines the advantage of pipeline physical cleaning and Chemical cleaning, not only
The brushing ability that mechanical pipe-cleaner is stronger is make use of, and cross-linked polyacrylamide aqueous gel used can be by most of debris
It is contained within, greatly reduces when use merely mechanical pipe-cleaner and the probability of blocking occurs, while whole being combined clearly can be reduced
Promotion pressure needed for the operation of pipe device, mitigates the abrasion to inner tubal wall, effectively reduces pigging cost.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments will make it will be apparent that defined herein one for those skilled in the art
As principle can in other embodiments be realized in the case of the spirit or scope for not departing from invention.Therefore, the present invention will not
Can be limited and the embodiments shown herein, and be to fit to consistent with principles disclosed herein and novel features
Scope most wide.
Claims (3)
1. a kind of gel composite tube cleaner, it is characterised in that including roller brush type tube cleaner, cross-linked polyacrylamide aqueous gel and
Polyurethane wiper, wherein, the roller brush type tube cleaner is arranged on the front portion of the gel composite tube cleaner, and the polyurethane is clear
Pipe device is arranged on the afterbody of the gel composite tube cleaner, and the cross-linked polyacrylamide aqueous gel is arranged on the gel and answers
The middle part of wiper is closed, wherein：
The preparation method of the cross-linked polyacrylamide aqueous gel is comprised the following steps：
Aluminium citrate AlCit mother liquors and polyacrylamide HPAM mother liquors are added to the water well mixed, are subsequently adding thiocarbamide and chlorine
Change sodium, regulation pH value is 5.0~7.0, is diluted with water so that the concentration of HPAM is 2500mg/L-3500mg/L in mixture,
The concentration of AlCit is 105mg/L-125mg/L, and the concentration of NaCl is 140mg/L-160mg/L, and the concentration of thiocarbamide is 140mg/L-
170mg/L；
The mixture carries out cross-linking reaction 3d-7d at 20 DEG C -85 DEG C.
2. gel composite tube cleaner as claimed in claim 1, it is characterised in that the HPAM average moleculars in the HPAM mother liquors
Measure is 1.0 × 107-2.0×107。
3. gel composite tube cleaner as claimed in claim 2, it is characterised in that the mixture is handed at 20 DEG C -85 DEG C
During connection reaction 3d-7d, methods described also includes：
The polyacrylamide is hydrolyzed, partially hydrolyzed polyacrylamide (PHPA) is obtained, wherein, the HPAM in the HPAM mother liquors
Relative molecular weight be 1.0 × 107-2.0×107, the degree of hydrolysis 20%-30% of the polyacrylamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399770.8A CN104259157B (en) | 2014-08-14 | 2014-08-14 | The preparation method of gel composite tube cleaner and cross-linked polyacrylamide aqueous gel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399770.8A CN104259157B (en) | 2014-08-14 | 2014-08-14 | The preparation method of gel composite tube cleaner and cross-linked polyacrylamide aqueous gel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104259157A CN104259157A (en) | 2015-01-07 |
| CN104259157B true CN104259157B (en) | 2017-07-07 |
Family
ID=52150804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410399770.8A Active CN104259157B (en) | 2014-08-14 | 2014-08-14 | The preparation method of gel composite tube cleaner and cross-linked polyacrylamide aqueous gel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104259157B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080916A (en) * | 2015-07-30 | 2015-11-25 | 河南中拓石油工程技术股份有限公司 | Water sweeping and drying pipe cleaner train of natural gas pipeline |
| CN105107801A (en) * | 2015-07-30 | 2015-12-02 | 河南中拓石油工程技术股份有限公司 | Water-sweeping, drying and inerting integrated process for natural gas transportation pipeline |
| CN105396850B (en) * | 2015-10-26 | 2018-01-02 | 中国石油天然气股份有限公司 | One kind water suction wiper |
| CN109364418A (en) * | 2018-11-26 | 2019-02-22 | 山东科技大学 | A kind of plastigel material for preventing and treating spontaneous combustionof coal |
| CN111889463B (en) * | 2020-07-30 | 2021-11-09 | 苏州普滤得净化股份有限公司 | Long-distance pipeline cleaning system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3108012A (en) * | 1960-07-20 | 1963-10-22 | Pipelife Corp | Method of conditioning transmission lines in situ |
| US4416703A (en) * | 1981-11-20 | 1983-11-22 | Shell Oil Company | System for removing debris from pipelines |
| DE4237553C2 (en) * | 1991-11-12 | 1996-09-26 | Shizuo Sagawa | Stamp for use in a method of coating an inner tube surface |
| JPH06185203A (en) * | 1992-07-08 | 1994-07-05 | Ryoju Shoji Kk | Piping cleaning unit pipe |
| CN2310977Y (en) * | 1995-12-04 | 1999-03-17 | 中国石油天然气总公司工程技术研究院 | Device for cleaning pipeline bidirectionally with mixed detergent |
| CN100579674C (en) * | 2008-12-26 | 2010-01-13 | 中冶建工有限公司 | Method for cleaning or corrosion-protective coating inner wall of industrial pipeline and device |
-
2014
- 2014-08-14 CN CN201410399770.8A patent/CN104259157B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104259157A (en) | 2015-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104259157B (en) | The preparation method of gel composite tube cleaner and cross-linked polyacrylamide aqueous gel | |
| CN108707454B (en) | Thickening agent and application thereof | |
| EP0357572A1 (en) | A process for cleaning tube type heat exchangers | |
| EP3234436B1 (en) | Systems for sealing pipelines using a gel pig | |
| EA200700107A1 (en) | METHOD FOR REMOVAL OF HYDRATE SPECIMENS | |
| CN108559675B (en) | Soluble chemical paraffin removal ball and preparation method and use method thereof | |
| CN104479662B (en) | A kind of oil field digitlization supercharging sled barium strontium descaling agent | |
| CN205732174U (en) | A kind of inside pipe wall automatic desludging machine | |
| CN203936084U (en) | A kind of cleaning equipment of pipeline | |
| CN206951720U (en) | Oil pipeline rotating vibrating type descaling device | |
| CN103551351A (en) | Jet dredging pipe cleaner | |
| CN208934103U (en) | A kind of hydrodynamic force sewage conduct grease cleaning plant | |
| CN205479967U (en) | Novel pipe cleaner | |
| CN202962987U (en) | Soft anti-blocking pipe cleaner | |
| CN204234419U (en) | Tube cleaning arrangement | |
| CN204710808U (en) | A kind of high-pressure cleaning device | |
| CN204996795U (en) | Pipeline stay -furring tool | |
| CN204817377U (en) | Petroleum pipeline dirt clearance structure | |
| CN104646364A (en) | Oil-water pipe wall trash remover | |
| CN101880887A (en) | Composite acid metal surface cleaning agent and using method thereof | |
| CN107593703A (en) | For the bactericide and its preparation method of oil field water treatment system and application | |
| CN202860937U (en) | Micro-explosion type water pipeline scaling apparatus | |
| CN203725447U (en) | Multifunctional tube cleaner | |
| CN203273057U (en) | Novel corrosion-resistant stainless steel composite steel tube | |
| CN202432890U (en) | Anti-corrosion heat pump double-pipe heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211105 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Address before: PetroChina building, No. 9, Dongzhimen North Street, Dongcheng District, Beijing 100029 Patentee before: PETROCHINA Co.,Ltd. |
|
| TR01 | Transfer of patent right |